Foundry cutoff machine



April 8, 1947. H. H. TALBOYS 2,418,737

FOUNDRY CUTOFF MACHINE l o riginal Filed Jan. 28, 194s 5 sheets-sheet '1 April 8, 1947.

H. H. TALBOYS FOUNDRY CUTOFF MACHINE Original Filed Jan. 28, 1943 5 Sheets-Sheet 2 Yen/y ff. Tafayf (LA/AM M pril 8, 1947. i H, H, TALBOYS 2,418,737

FOUNDRY CUTOFF MACHINE original FiledJan. 2s, i943 5 sheets-sheet :s

y N n April 8, 1947.

H. H. TALBOYS FOUNDRY CUTOFF MACHINE briginal Filed Jan. 28, 1945 5 sheets-'sheet 4 ww @w ffafwy? April 8, 1947.

H. H. TALBOYS FOUNDRY CUTOFF MACHINE origin-a1 Filed Jan. 2S, 1943 5 sheets-sheet 5 Patented Apr. 8, 1947 FOUNDRY CU'IOFF MACHINE Henry H. Talboys, Milwaukee, Wis., assignor to N ordberg Manufacturing Company, Milwaukee, Wis., a corporation of Wisconsin Original application January 28, 1943, Serial No. 473,812, now Patent No. 2,405,468, dated August 6, 194,6. Divided and this application February 5, 1945, Serial No. 576,186

8 Claims.

This invention relates to an improvement in machines for cutting articles, for example, metal castings.

Another purpose of the invention is an improved method for trimming and cutting articles, for example metal castings.

Another purpose is to provide an improved installation for cutting or trimming articles, such as castings, of various sizes and shapes with maximum speed and minimum handling effort.

Another purpose is to provide a iiexible system and method for cutting or trimming articles of a variety of shapes.

Other purposes will appear from time to time throughout the specification and claims.

The present application is a division of my co-pending application Serial Number 473,812, led January 28, 1943, for Foundry cutoff machine, which matured as Patent No. 2,405,468, August 6, 1946.

The invention is illustrated more or less diagrammatically in the accompanying drawings,

' wherein- Figure 1 is a perspective view;

Figure 2 is a side elevation with parts in section;

Figure 3 is a plan view of part of the structure shown in Figure 1;

Figure 4 is a section on the line 4-4 of Figure 3;

Figure 5 is a vertical section, on an enlarged scale, through the movable carriage;

Figure 6 is a section on the line 6-6 of Fig. 5; and

Figure 7 is a partial section, on a somewhat enlarged scale, on the line 'l--l of Fig. 5.

Like parts are indicated by like characters throughout the specication and drawings.

Referring to the drawings, and particularly Figures 1 and 2, a structure is illustrated including the main parts as follows:

A generally indicates a supporting base. B generally indicatesa carriage and cutter assembly longitudinally movable along the base A. C indicates a work support exterior to the base A, and D indicates a second work support exterior to the base A, and located adjacent and beyond one end of the base A.

Referring first to the base or assembly A, which is described in considerable detail in my co-pending application Serial No. 473,812, it will be understood that it may have any suitable bottom portion or floor along which are shown as extending, a pair of parallel I-beams 2, 2. The I-beams carry on their upper flanges any suitable Work supporting rails 3, 3, herein shown as round and as mounted upon any suitable conventional rails 4. It will be understood, of course, that any suitable rails may be employed but the round rails mounted on the conventional I-shaped rails are in practice satisfactory.

It will be observed that the I-beams 2 areof suliicient height to permit pieces of substantial size to be positioned between them for accessibility to the cutting device which will later be described, However, since such supporting means within the base are described and claimed in said abovementioned co-pending application Serial No. 473,812, they are not herein indicated.

A rack 8 is shown as extending along one of the rails 3 and may be mounted, for example on a longitudinally extending element 9, suitably secured to one of the lower rails yIl, or to an upper portion of one of the side frame members or I-beams 2. I0 indicate any proper end stops as shown in Figure 1 at each end of the round rails 3.

The structure generally indicated at B includes a carriage which is longitudinally movable along the rails 3 and a sub-carriage, transversely movable on the longitudinal carriage, a

'turntable rotated about a vertical axis on the sub-carriage and a cutter movably mounted on the turntable. The structure will now be described in greater detail.

The details of the carriage do not of themselves form part of the present invention. There 'are illustrated for example transversely extendtransversely extending track I5. Riding transversely on the tracks I5 is a sub-carriage, the frame of which is generally indicated as at I1. It carries in any suitable manner flanged wheels I8 riding on the tracks I5.-

Rotatably mounted on said sub-carriage is a turntable structure generally indicated as 2U, mounted for rotation about a vertical axis by any suitable means, for example, upon inner circular rails 2l, outer circular rails 22 and the Y intervening rollers or balls 23. Mounted on the turntable is any suitable motor 24 which may be electric or otherwise but is herein shown as electric. ,Y Its rotorshaft 25 carries one or more pulley or pulleys 25 about which pass the belt or belts 2 to the driven pulleys 28. These pulleys are mounted on a shaft 29 which is rotat ably mounted at the upper end of the connected links 3G. These links are rotatable about Yan axis generally indicated at 3l which is preferably concentric with the axis of rotation of the rotor shaft 25. l

32 indicates generally any suitable support, up'- wardly extending from the turntable structure 20, upon which the links 30 are rotatably positioned.

Rotatably mounted in any suitable manner in relation to the shaft 29 is the outwardly extending arm 35 upon the outer end of which is rotatably mounted any suitable cutting disk 3B, rotatable with 4the `shaft 3 1. 'which is rotated by means "of 'a pulley 38, belts 39, and the pulley or pulleys .23.4v AIt will be understoodthat there is thus provided a `flexible supporting means for the cutting element 36. The outer end of the arm 35 can be raised and lowered by rotating it about the shaft29. The shaft 29 is itself mounted in the pivoted links 3U so that the arm 35 vmay be `moved transversely, giving a great freedom of 'motion to the element. Any suitable manual handle 4B may be employed whereby vthe operator may radially manipulate the 'arm 35. The vertical movement of the arm 35 is guided by a pair of laterally spaced vertical frame members 4I. The links 3D are guided in their rotary movement by an upward yextension 42 which rides in an arcuate channel 63. vThe arm 35 is normally held in levated'position by means of a coil Vspring 44 in a tube 45. V.Connecting the coil spring with the armisany suitable'cable or Iflexible tension member `46 herein 'shown as passing around a sheave or pulley 41 and connected to the arm 35 as at 48. The strength of the raising yimpulse 'canb'e adjusted by means of the adjusting chain 49 secured to the'opposite end ofthe spring 44 and which can be engaged at various positions in a slot 5'0 in the -bottom df the Aouter e'ndof the tute 4as. y i

Any suitable means may be 4employed Afor locking the turntable atlany 'desired iposition in relation to the sub-carriage, or if desired, the turntable may bepermitt'ed to 'rotate freely preferably with suicient friction'al resistance so that unintended rotation will not take place. As a locking means, there is illustratedfor 'examplea locking latchor lever'52 -pivoted as "at 53 'to the `generally desirable to lock the sub-carriage in relation to the kmain carriage.v This Vlocking 'ac. tion may be obtained 'for example by any suitable toothed securing `dog 1I 6a,V pivoted as at `I b on `the sub-carriage 'lll' Iand engageable with the vrack I6, on the main carriage. Thus the sub-carriage may be locked at any desired position in relation ytothe main 4carriage or if desired 'the dog 16a may be left in released position.

The main'carriagemay be 'locked at any point along the rails 3 by means of a toothedllatch la 4pivoted as at 8b on the main frame. 'Bois -an arm carrying a counterweight 8d which normally urges the member 8a into locking relationship with the member 8. Any suitable means may be provided for raising the arm 8c and re1eas ing' the carriage for movement along the rails 3.

In many instances, .it is desirable to support the work exteriorly to the space dened by the side frame elements 2, 2. In Figure 1, normally fixed exterior supporting means are illustrated. 55 indicates a base upon which an upper support 5S is mounted. The support 555 may be formed or any suitable shape and size and may for example be of wood so that the cutter 36 will not be injured when it passes through metal objects laid thereon.

It vmayalso be desirable to provide movable supporting means D for supporting one or more work ypieces which' may be presented to the cutter 35 at a variety of angles or positions. As shown for example in Figures 3 and 4 and l, there is illustrated any suitable base 60 upon which is rotatable 'about 'a vertical axis a hub 5| carrying any suitable wheel or arm supporting structure S2. A This movement may be controlled for example by afoot brake which includes a member 63 pivoted` at 64 on the base 5B and normally gravitally urged 'into braking relationship with the wheel 62 by Vits inward extension 53a.. 65

` is any suitable foot lever whereby the brake may be 'moved into inoperative position. Generally radially extending from the hub BI and mounted upon th'e wheel 52 are a plurality `of channel members 66. Radially movable in these channel members are the radially extending elements 5l, which if desired, may be vof wood. They may be held against radial movement if desired or frictional resistance "may be relied upon. It is desirable, however, to have the 'members S7 radially movable so 'that the effective radius of the rotary supporting table may be 'varied at will. The members 51 are 'preferably of 'woodand preferably extend above the edges of the channel 65, in order to prevent the cutter 36 from engaging the channels 66 after passing 'through the work. Any suitable central supporting ring 68 'may also be employed if need be. 59 indicates typical work piece. It will be understood that the work pieces may be supported on the "extension members '61 in any suitable manner. Cross pieces 'm may, rfor example, be loosely positioned in order to support the work, or the work may Vextend across to adjacent radial supports.

It will be understood that a plurality of work pieces if desired may bevpositioned on the rotary support 'above described'and may be moved into the working z'oe where 4they can 'be reached by the cutter 36. If desired, a'step by .step feeding chain may 'be set up, -the work being positioned on the "turntable "andprogressiv'ely moved step by step into the 'cutting z'onean'dthe'n removed from the turntable after having been rotated 'beyond the cutting position. YI`n any event, 4the supports maybe? employed. But Athe combination 'shown in Figure 'l `is"ra`.ctical"and usefuland permits asingl'e cutting apparatus"tc' operate in base area and because of the adjustabilityof the main carriage, the sub-carriage and the turntable, the worl: may be operated upon throughout said area. This is advantageous and a saving of labor and time as the Work for example can be deposited at one side of the frame While Worki already deposited in Working position is being operated on at the other side of the frame. A relatively small gang of men can thus operate Vrapidly upon a large mass of material.

A practical application of the device` and method is to trim castings by cutting off gates, fins, etc., and in general trimming oil" Waste por- .tions of the metal and separating different parts of the castings Where separation is desired.

It will be realized that While I have shown and described an operating device, still many changes in size, shape, arrangement, number and disposition of the parts may be made Without departing materially from the spirit of my invention. I wish, therefore, that the showing herein be taken as in a large sense illustrative and diagrammatic rather than limiting me to the precise showing.

The use and operation of my invention are as follows:

There is provided herein a method of and an apparatus for trimming or cutting metal parts, for example, castings, which permits of the rapid trimming or a large number of parts and the use of a substantial areafor the receiving, operating upon and removal of the trimmed parts.

In the structure herein disclosed, there is illustrated a practical exemplication of the device and an illustration of the mechanism adapted for carrying out the above mentioned method in which the main carriage, and all the parts mounted thereon, is longitudinally movable or adjustable along a Work area. This permits the cutter to adapt itself or to be opposed to parts located throughout a very substantial oor area. The transverse adjustabilty of the main carriage and the sub-carriage and the provision of a turntable with the cutting member movably mounted on it, permits Wide variations of the angle of approach of the cutter to the Work. This, in connection with a highly exible supporting means and method, enables a single cutter operated by a single man to operate upon a very large volume of Work.

As is clear from Figure 1, the cutting element may be opposed to castings positioned within the base A or upon either of the outside bases. The

rotary structure of Figures 3 and 4 may carry a large number of castings and may be moved step by step through any suitable zone vof access within the range of movement of the cutter 36. By use of the member All), the cutter may be vertically moved in relation to the casting or may be traversed across the casting. Or the cut may be obtained by a combination of the two movements.

I claim:

l. In a castings trimmer, a base, a carriage, means for guiding it for generally horizontal movement along said base, a turn table on said carriage rotatable about a generally vertical axis,

an arm on said turntable rotatable about a gen- F erally horizontal axis, a rotary cutter mounted adjacent the outer end of the arm and means for rotating it, and castings supporting means positioned adjacent the base, located laterally out of line with the path of movement of the carriage,

lbut Within the radius of movement of the arm,

said supporting means including a turntable upon which castings may be positioned,A said turntable having radially extending radially adjustable 'supporting elements.

2. In a castings trimmer, a base, a carriage, means for guiding it for generally horizontal movement along said base, a turntable on said carriage rotatable about a generally vertical axis, an arm on said turntable rotatable about a generally horizontal axis, a rotary cutter mounted adjacent the outer end of the arm and means for rotating it, and castings supporting means posi- 'tioned adjacent the base, located laterally out of line With the path of movement of the carriage, but Within the radius of movement of the arm, said supporting means including a turntable upon which castings may be positioned and means for controlling the rotation of said turn table, including a brake and means for normally holding it in braking position- 3. In a castings trimmer, a base, a carriage, means for guiding it for generally horizontal movement along said base, a turn table on said carriage rotatable about a generally vertical axis, an arm on said turn table rotatable about a generally horizontal axis, a rotary cutter mounted adjacent the outer end of the arm and means for rotating it, and castings supporting means positioned adjacent the base, located laterally out of line with the path of movement of the carriage, but Within the radius of movement of the arm, said supporting means including a turn table upon which castings may be positioned and means for controlling the rotation of said turn table, including a brake and means for normally holding it in braking position and brake releasing means including a foot pedal.

4. In a castings trimmer, a castings supporting base including a supporting member rotatable about a generally vertical aXis, said member being adapted to support castings of various shapes and sizes, at various distances from the center of rotation of the member, a castings cutter assembly including a base, a trimmer arm mounted on said base, for ready rotation, in relation to said base, about both a generally horizontal and a generally vertical axis, said arm being additionally freely movable endvvise, and a cutting member rotatably mounted on said arm and means for rotating the cutting member, the upper surface of said supporting member, and of the articles positioned thereupon, being freely accessible to said cutting member throughout a substantial radial zone.

5. In a castings trimmer, a castings supporting base including `a supporting member rotatable about a generally vertical axis, said member being adapted to support castings of various shapes and sizes, at various distances from the center of rotation of the member, a castings cutter assembly including a base, a trimmer arm mounted on said base, for ready rotation, in relation to said base, about both a generally horizontal and a generally vertical aXis, said arm being additionally freely movable endwise, and a cutting member rotatably mounted on said arm and means for rotating the cutting member, the upper surface of said supporting member, and of the articles positioned thereupon, being freely accessible to said cutting member throughout a substantial radial zone, and means for normally holding said supporting member against rotation.

6. In a castings trimmer, a castings supporting base including a supporting member rotatable Yaus,'ver

about a generally vertical axis, said member being adapted to support castings ofvarious shapes and sizes, at various distances from the center of rotation of the member, a castings cutter assembly including a base, a trimmer arm mounted on said base, for ready rotation, in rela tion to said base, about both a generally horizontal and a generally vertical axis, said arm being additionally freely movable endWise, and a cutting member rotatably mounted on said .arm and means for rotating the cutting member, the

, upper surface of said supporting member, and

of the articles positioned thereupon, being freely accessible to said cutting member throughout a substantial radial zone, and means for normally holding said supporting member against rotation, and means, operable'by the user, Afor releasing said holding means and for permitting rotation of thesupporting member.

7. In a castings trimmer, a base, a castings trimmer assembly mounted on said base, said assembly being rotatable bodily about said base, and being located radially outwardly from the center about which it is rotated, said assembly including a carriage movable toward and away from the center about which said unit is rotated, an arm mounted on said carriage for ready rotation about a generally horizontal and a generally vertical axis, and being additionally freely movable endWise, a cutting member rotated on said arm and means for rotating the cutting member.

8. In a castings trimmer, a castings supporting base including a supporting member rotatable about a generally vertical axis, said member being adapted to support castings of various shapes and sizes at various distances from the center of rotation of the member, a castings cutter assembly including la base, a turn table on said base, rotatable .about a generally vertical axis, a trimmer yarm mounted on said turn table Vfor ready rotation in relation to said turn table about `a generally horizontal axis, said arm being additionally freely movable endwise, a cutting member rotatably mounted on said arm and means for rotating the cutting member, the length of said arm, in relation to the distance between the axes of the supporting member and of the turn table, being suiicient to permit the cutting member to reach articles positioned upon the supporting member throughout a zone eX- tending from adjacent the center to the periphery of the cutting member, the upper surfaces of the supporting member and the articles positioned thereupon, being `freely accessible, from above, to said cutting member.

HENRY H. TALBOY S.

REFERENCES CITED The `followingl references are of record in the le of this patent:

1 UNITED STATES PATENTS Number Name Date 453,297 Watrous June 2, 1891 2,195,108 Grai Mar. 26, 1940 `1,640,832 Jacobowitz Aug. 30, 1927 1,909,001 Nelson May 16, 1933 2,187,299 Burkhardt Jan. 16, 1940 FOREIGN PATENTS Number Country Date 16,010 British July 19, 1904 

